Posted by david on .
If a rock is thrown upward on the planet Mars with a velocity of 13 m/s, its height in meters t seconds later is given by y = 13t − 1.86t2. (Round your answers to two decimal places.)
(a) Find the average velocity over the given time intervals.

calculus 
the Master,
Take the code from the Master..
the interval [a,b]
(((13*b)(1.86*b^2))((13*a)(1.86*a^2)))/ba
make b smaller and smaller until you reach the correct instantaneous velocity